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Second-order sliding mode control of wind turbines to enhance the fault-ride through capability under unbalanced grid faults

The integration of wind generation to the grid is growing rapidly across the world. As a result, grid operators have introduced the so-called grid codes (GC), which nowadays include a range of technical conditions and requirements, which wind generators must fulfill. Among these, the low-voltage rid...

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Main Authors: Tahir, Khalfallah, Allaoui, Tayeb, Denai, Mouloud, Mekhilef, Saad, Belfedal, Cheikh, Doumi, M'hamed
Format: Article
Published: John Wiley & Sons 2021
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.um.edu.my/28514/
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spelling my.um.eprints.285142022-08-16T04:48:00Z http://eprints.um.edu.my/28514/ Second-order sliding mode control of wind turbines to enhance the fault-ride through capability under unbalanced grid faults Tahir, Khalfallah Allaoui, Tayeb Denai, Mouloud Mekhilef, Saad Belfedal, Cheikh Doumi, M'hamed TK Electrical engineering. Electronics Nuclear engineering The integration of wind generation to the grid is growing rapidly across the world. As a result, grid operators have introduced the so-called grid codes (GC), which nowadays include a range of technical conditions and requirements, which wind generators must fulfill. Among these, the low-voltage ride through (LVRT) is a requirement for wind turbines to stay connected to the grid and continue to operate during the disturbance. In this study, a control structure, combining inertial kinetic energy storage with a crowbar circuit, is proposed to enhance the ride through capability of a wind turbine generator (WTG) based on a wound-field synchronous generator (WFSG) under unsymmetrical voltage dips. For the grid-side converter (GSC), a decoupled double synchronous reference frame (DDSRF) d-q current controller is used. Furthermore, a second-order sliding mode controller (SOSMC) with super-twisting (ST) algorithm is proposed for the GSC and the machine-side converter (MSC) to improve the response speed and achieve an accurate regulation of the dq-axis current components simultaneously. The main objectives of the GSC are to achieve a balanced, sinusoidal current and smooth the real and reactive powers to reduce the influence of the negative-sequence voltage. A series of simulations are presented to demonstrate the effectiveness of the proposed control scheme in improving the LVRT capability of the WFSG-driven wind turbine and the power quality of the system under unbalanced grid voltage conditions. John Wiley & Sons 2021-07 Article PeerReviewed Tahir, Khalfallah and Allaoui, Tayeb and Denai, Mouloud and Mekhilef, Saad and Belfedal, Cheikh and Doumi, M'hamed (2021) Second-order sliding mode control of wind turbines to enhance the fault-ride through capability under unbalanced grid faults. International Journal of Circuit Theory and Applications, 49 (7). pp. 1959-1986. ISSN 0098-9886, DOI https://doi.org/10.1002/cta.3023 <https://doi.org/10.1002/cta.3023>. 10.1002/cta.3023
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Tahir, Khalfallah
Allaoui, Tayeb
Denai, Mouloud
Mekhilef, Saad
Belfedal, Cheikh
Doumi, M'hamed
Second-order sliding mode control of wind turbines to enhance the fault-ride through capability under unbalanced grid faults
description The integration of wind generation to the grid is growing rapidly across the world. As a result, grid operators have introduced the so-called grid codes (GC), which nowadays include a range of technical conditions and requirements, which wind generators must fulfill. Among these, the low-voltage ride through (LVRT) is a requirement for wind turbines to stay connected to the grid and continue to operate during the disturbance. In this study, a control structure, combining inertial kinetic energy storage with a crowbar circuit, is proposed to enhance the ride through capability of a wind turbine generator (WTG) based on a wound-field synchronous generator (WFSG) under unsymmetrical voltage dips. For the grid-side converter (GSC), a decoupled double synchronous reference frame (DDSRF) d-q current controller is used. Furthermore, a second-order sliding mode controller (SOSMC) with super-twisting (ST) algorithm is proposed for the GSC and the machine-side converter (MSC) to improve the response speed and achieve an accurate regulation of the dq-axis current components simultaneously. The main objectives of the GSC are to achieve a balanced, sinusoidal current and smooth the real and reactive powers to reduce the influence of the negative-sequence voltage. A series of simulations are presented to demonstrate the effectiveness of the proposed control scheme in improving the LVRT capability of the WFSG-driven wind turbine and the power quality of the system under unbalanced grid voltage conditions.
format Article
author Tahir, Khalfallah
Allaoui, Tayeb
Denai, Mouloud
Mekhilef, Saad
Belfedal, Cheikh
Doumi, M'hamed
author_facet Tahir, Khalfallah
Allaoui, Tayeb
Denai, Mouloud
Mekhilef, Saad
Belfedal, Cheikh
Doumi, M'hamed
author_sort Tahir, Khalfallah
title Second-order sliding mode control of wind turbines to enhance the fault-ride through capability under unbalanced grid faults
title_short Second-order sliding mode control of wind turbines to enhance the fault-ride through capability under unbalanced grid faults
title_full Second-order sliding mode control of wind turbines to enhance the fault-ride through capability under unbalanced grid faults
title_fullStr Second-order sliding mode control of wind turbines to enhance the fault-ride through capability under unbalanced grid faults
title_full_unstemmed Second-order sliding mode control of wind turbines to enhance the fault-ride through capability under unbalanced grid faults
title_sort second-order sliding mode control of wind turbines to enhance the fault-ride through capability under unbalanced grid faults
publisher John Wiley & Sons
publishDate 2021
url http://eprints.um.edu.my/28514/
_version_ 1744649121922285568
score 13.244404

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